Kilakarai, the coastal city which is few kilometers away from Ramanathapuram, is situated in the Bay of Mannar. Ervadi which is famous for Dhargah, is situated in the Western part of Kilakarai. Sethukkaraiis situated in the Eastern part of Kilakarai.

Pits were surrounded in between Ervadi and Sethukkarai. In a particular area in-between these pits, there is a large gap of about 150 Fathoms. Two beacons were kept in order to show this gap.

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